The 42-gallon fresh water tank (SKU 731BLANK) you referenced measures approximately 60 1/4" x 24 1/4" x 8" and is available for purchase. For your installation needs, you can acquire the required spin weld fittings: one 1 1/4" fitting and four 1/2" fittings, along with four tank level sensors. We offer these fittings and sensors individually to match your specifications. The fittings and sensors are compatible with your tank's fill, vent, pump, and drain connections. For convenience, consider our Universal Fittings Kit which may cover all necessary components for your replacement. Please visit our product pages to select the exact fittings and sensors you need, or contact us for further assistance to ensure a successful and reliable installation.